Three-cylinder locomotive



J 13. 1925- 1,523,185 E. O. ELLIOTT THREE- CYLINDER LOCOMOTIVE Filed May 51, 1924 4 Sheets-Sheet l Jan, 13. 1

E. o. ELLlQTT THREE-CYLINDER LOCOMOTIVE Filed May 51, 1924 4 Sheets-$heet 2 Jw ZfiWW d 0 5%0525.

E. O. ELLIOTT THREE -CYLI NDER LOCOMOTIVE Filed May 31, 1924 4 Sheets-Sheet 3 E. O. ELLIOTT THREE-CYLINDER LQ COMOTIVE Filed May 51, 1924 4 Sheets-Sheet 4 Edvard u HHHH X Alum/1 A Patented J an. 13,. 1925.

EDWARD O. ELLIOTT, OF PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR TO THE BALD-;

"WIN LOCOMOTIVE WORKS, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

THREE-CYLINDER LOCOMOTIVE.

Application filed May 31, 1924.

To all whom it may 007106771.

Be it known that I, EDWARD O. ELLIOTT, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Three-Cylinder Locomotives, oi" which the following is a specification.

This invention relates to certain improvements in locomotives'ot the three-cylinder type.

.he object of the invention is to construct the locomotive, particularly the saddle containing the central cylinder, so that sutiicient space will be provided for the central cylinder, its valve chest and the exhaust passages, and to reduce stresses at the flange joints and connections between the saddle and the outside cylinder castings.

The invention relates to certain other details of construction, which will be described hereinafter.

In the accompanying drawings:

Fig. 1 is an end view of the saddle of a three-cylinder locomotive with the "frame of the locomotive in section, the section being on the line 11, Fig. 3;

' Fig. 2 is a plan view;

Fig. 3 is a side view;

Fig. at is an end view showing the live steam passages communicating with the sev eral steamchests, the View being partly in section;

Fig. 5 is a plan view of Fig. l;

Fig. 6 is an end view showing the exhaust passages from the several valve chests, the view being partially in section;

Fig. '7 is a plan view of Fig. 6;

Fig. 8 is a view illustrating my invention applied to compound locomotives; and

Fig. 9 is a view illustrating a modification in which the exhaust passages are located above the middle cylinder.

Referring in the first instance to Figs. 1, 2, and 3, the side frames 1. are located at each side of the locomotive. Mounted on these frames is a central cylinder saddle 2, which is flanged at 3 and at 4i, to provide an extended bearing for the saddle on the frame. Bolts 5 extend through the frames 1 and flanges 3 and firmly secure the saddle to the frame. The flanges l rest upon the side frames, as shown in Fig. 1. In the saddle 2 is a central, or third cylinder 6. Also cast in the saddle is the cylindrical valve chest 7 Serial No. 716,981.

for the valve which controls the flow of steam to and from the central cylinder. On the upper end of the cylinder saddle 2 are flanges 8, which conform to the shape of the boiler.

It will be noticed that the cylinder saddle 2 extends at each side considerably beyond th main frames 1 of the locomotive, and at each side is a vertical surface 9. to which is secured the cylinder castings 10, in which are formed the side cylinders 11. and their valve chests 12.

tlnthe saddle 2 are vertical flanges 13, and on the cylinder castings are flanges let. A series of bolts 15 pass through the two flanges and firmly secure the cylinder castings to the saddle. In addition the stress at the top of the cylinder castings due to overhanging weight is resisted by the stud bolts 15. Each cylinder casting has lower horizontal flanges 16, through which bolts 17 and dowels 17 extend. The shear can be counteracted by lugs, flanges or keys arranged as desired. By this construction a large third cylinder 6 can be used and there will be suf ficient space between the cylinder and the frames for the exhaust passages leading from the several cylinders. and 7.)

The steam inlet pipes 18 (amimunicate with the steam passages of the valve cham- (See Figs. 6

bers 12. In the drawings, the valves are omitted as they form no part of the present invention.

- The valve chest T of the central cylinder is supplied with steam from the chests l2. ot the two side cylinders, through passages 19, pipes 20, passages 21 and 21?. as shown in Figs. & and 5.

The exhaust from the right-hand cylinder 12 flows through two passages 22, communicating with each end of the valve chest. These two passages communicate with an ex haust passage 23, which extends partly around the cent al cylinder 6, and terminate s at a base 24, within the smoke-box of the locomotive, and to which the exhaust nozzle is attached.

The exhaust from the left-hand valve chest 12 fiows through two passages 25, which communicate with the passage 23. The exhaust from the valve chest 7 of the central cylinder communicates with the passages 22 through short passages 26.

The central cylinder 6 is arranged on an incline and its forward end projects into the smoke-box. The upper portion of the saddle is arched over the cylinder. This construction requires that a portion of the casing of the smoke-box be cut away, as shown at 28, and closed by an air-tight hood 27, which. is secured to the casing. (Fig. 3.)

Projecting from the underside of the saddle, in the present instance. is the truck centre pin 33.

Fig. 8 illustrates a compound engine can bodying the improvements.

The high pressure cylinder 6 is formed in the saddle 2 Steam enters the chest 7 through a live steam pipe 18 and, after expanding to the desired ratio, passes to the steam chests 12 of the low pressure cylinders 11, through receiving chambers 29 and 30. The chamber extends under the central cylinder and communicates with the valve chest 12 of the left-hand cylinder casting.

Fig. 9 illustrates a modification, in which the third cylinder 6 is located in the lower portion of the saddle 2", and the valve chest '7" is located directly above the cylinder.

The live steam pipes 18 and 18 communicate directly with the valve chests 12 and the valve chest 7 is connected to the pipe 18 through a pipe 31 and passage 32.

The arrangement of the steam passages and exhaust passages may be varied according to the particular design of the engine under construction.

By the above construction, hereinbefore described, it will be seen that the width of the cylinder saddle is not limited by the frames of the locomotive, but extends considerably beyond each side frame, giving ample room for the exhaust passages, as well as the steam passages. The cylinder castings are attached securely to the sides of the central saddle by bolts so that the overhang of the cylinder castings is considerably less than where the cylinder castings are secured to a central saddle ona line with the frames of the locomotive.

I claim:

1. The combination in a locomotive of the three-cylinder type, of side frames; a saddle mounted on the said frames, and containing a central cylinder, said saddle extending beyond the side frames of the locomotive; and side cylinder castings secured to the sides of the saddle.

2. The combination in a locomotive of the three-cylinder type, of two side frames; a cylinder saddle mounted on the frames, and

having the center cylinder and its valve chest casttherein, said saddle extending laterally beyond the saidframes; and side cylinder castings secured to the sides of the saddle and containing a cylinder and its valve chest; said saddle having exhaust passages therein communicating; with the valve chest of the central cylinder and with the valve chest of each of the side cylinders.

3. The combination in a locomotive of the three-cylinder type, of side frames; a saddle mounted on said frames, said saddle containing the central cylinder and its valve chest and having exhaust'passages extending partly around the central cylinder and communicating with the valve chest of said.

central cylinder, said saddle extending at each side beyond the side frames of the locomotive; and side cylinder castings secured to the sides ofthe saddle and having exhaust passages communicating with the exh aust passage of the central saddle.

l. The combination in a locomotive of the three-cylinder type, of side frames; a saddle mounted on the frames and extending'beyond the frames at each side, said saddle containing the central cylinder and its valve chest, and having exhaust passages partially encircling the cylinder and having inlet passages for live steam in the upper end, leading to the valve chest of the central'cylinder; and side cylinder castings secured to the sides of the saddle and havingexhaust passages therein communicating with the'exhaust passages in the saddle. and having live steam passages communicating with the steam passages in the cylinder. 7

5. The combination in a locomotive of the three-cylinder type, of longitudinal side frames; a saddle mountedon said frames, and extending beyond the frames at each side. a cylinder casting at each side of the saddle beyond the frames, said cylinder castings having vertical and horizontal flanges; and bolts extending through the flanges and into the saddle. 6. The comb'na-tion in a three-cylinder type, of longitudinal side frames; asaddle mounted on the-frames and extending beyond the frames. at each side; side cylinder castings outside of the frames and secured to the saddle, the said saddle containing the central cylinder, which is arranged at an incline; a: smoke-box casing cut away in front of the saddle; and a shaped hood closing the cutaway portion of the casing.

EDWARD o. ELLIOTT.

locomotive of the 

